"ERROR:Pack:625 - The dual data rate register ddr_tri_out1_u0 failed to combine with output buffer buf110 as required. Register ddr_tri_out1_u0 set/reset disagrees with another register in the I/O component."
"ERROR:Pack:626 - The dual data rate register ddr_tri_out311_u0 failed to join an I/O component as required. Please try constraining the register together with a valid pad or output buffer symbol. Note that FDDR library symbols may drive output buffers only."